filling under slab on grade
filling under slab on grade
(OP)
Boy do I get the interesting ones...
See the pics. 20 year old house - for some reason the contractor either didn't install the last course of CMU at the lower level deck or cut it away. I'm fixing the deck, no troubles, but the remaining gap between the lower CMU and the higher slab on grade for the house floor is letting the gravel and soil between leak out. How do I get at that to fill the void, block the hole, or otherwise fix it, without taking off the lower level of the deck? And what do I use to fill the void?


See the pics. 20 year old house - for some reason the contractor either didn't install the last course of CMU at the lower level deck or cut it away. I'm fixing the deck, no troubles, but the remaining gap between the lower CMU and the higher slab on grade for the house floor is letting the gravel and soil between leak out. How do I get at that to fill the void, block the hole, or otherwise fix it, without taking off the lower level of the deck? And what do I use to fill the void?


Please remember: we're not all guys!






RE: filling under slab on grade
RE: filling under slab on grade
Please remember: we're not all guys!
RE: filling under slab on grade
You still need to keep a separation between you infill concrete and any untreated wood or it will rot, and the deck members do look untreated...
I would make the form easily removable, leaving at least a 1/2" gap between the infill and the end joist.
Mike McCann, PE, SE (WA)
RE: filling under slab on grade
Please remember: we're not all guys!
RE: filling under slab on grade
I'd do the blocking off of the opening and drill a hole or two through the slab and have an EXPERIENCED SLAB JACKER" do the job.
I've had this question, or similar, when on a big job as an engineer. I had the contractor's ready mix guys come with a concrete pump and a load of grout. The pressure needed was not much and with one hole through which to get under the slab it was done in 10 minutes.
I think working from above will offer the best job and is easiest to do.
RE: filling under slab on grade
Please remember: we're not all guys!
RE: filling under slab on grade